MycroftOS: Implementation of a very first initial bootable version

- Add Buildroot patches to downgrade / upgrade package dependencies
  in line with the Mycroft A.I. software stack requirements.
- Add buildroot additional package dependencies in line with the
  Mycroft A.I. software stack requirements.
- Update rpi3 defconfig file.
- Implement initial root_fs overlay filestructure.
- Addition of some quick and dirty helper scripts.
- Update of README to reflect these changes.

buildroot-external/package/python-feedparser/Config.in

@@ -0,0 +1,7 @@
+config BR2_PACKAGE_PYTHON_FEEDPARSER
+	bool "python-feedparser"
+	help
+	  Universal feed parser, handles RSS 0.9x, RSS 1.0, RSS 2.0,
+	  CDF, Atom 0.3, and Atom 1.0 feeds.
+
+	  https://github.com/kurtmckee/feedparser

buildroot-external/package/python-feedparser/python-feedparser.hash

@@ -0,0 +1,6 @@
+# md5, sha256 from https://pypi.org/pypi/feedparser/json
+md5	ee8bd99535a4261b8e26976984dd6b26  feedparser-5.2.1.tar.bz2
+sha256	ce875495c90ebd74b179855449040003a1beb40cd13d5f037a0654251e260b02  feedparser-5.2.1.tar.bz2
+# Locally computed sha256 checksums
+sha256	3adcffa23e565106bd6af3aacc5d03cf7948073791c842037181683c61f4163f  LICENSE
+sha256	961b8d49c0f06d3569d787a8bf8b885faa0837e89d2dd6011cb8c70347aafee3  docs/license.rst

buildroot-external/package/python-feedparser/python-feedparser.mk

@@ -0,0 +1,14 @@
+################################################################################
+#
+# python-feedparser
+#
+################################################################################
+
+PYTHON_FEEDPARSER_VERSION = 5.2.1
+PYTHON_FEEDPARSER_SOURCE = feedparser-$(PYTHON_FEEDPARSER_VERSION).tar.bz2
+PYTHON_FEEDPARSER_SITE = https://files.pythonhosted.org/packages/91/d8/7d37fec71ff7c9dbcdd80d2b48bcdd86d6af502156fc93846fb0102cb2c4
+PYTHON_FEEDPARSER_SETUP_TYPE = setuptools
+PYTHON_FEEDPARSER_LICENSE = BSD-2-Clause
+PYTHON_FEEDPARSER_LICENSE_FILES = LICENSE docs/license.rst
+
+$(eval $(python-package))